Traffic And Highway Engineering
5th Edition
ISBN: 9781133605157
Author: Garber, Nicholas J., Hoel, Lester A.
Publisher: Cengage Learning,
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Chapter 12, Problem 12P
To determine
The second iteration for given area.
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12) List and define the 4 steps of the "4-step travel demand model" used in transportation planning.
The following socioeconomic data have been collected for the Jeffersonville Transportation Study (JTS).
Population = 72,173
Area = 70 square miles
Registered Vehicles = 26,685
Single-family housing units = 15,675
Apartment units = 7567
Retail employment = 5502
Nonretail employment = 27,324
Student attendance = 28,551 by zone of attendance
Average household income = $17,500
Total traffic zones = 129
The results of the cross-classification analysis are as follows.
Total trips produced for study area = 282,150 trips/day
Home-to-work trips 13% (36,680)
Home-to-nonwork trips 62% (174,933)
Non-home trips 25% (70,537)
The attraction rates for the study area have been developed using the following assumptions.
100% of home-to-work trips go to employment locations.
Home-to-nonwork trips are divided into the following types.
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Chapter 12 Solutions
Traffic And Highway Engineering
Ch. 12 - Prob. 1PCh. 12 - Prob. 2PCh. 12 - Prob. 3PCh. 12 - Prob. 4PCh. 12 - Prob. 5PCh. 12 - Prob. 6PCh. 12 - Prob. 7PCh. 12 - Prob. 8PCh. 12 - Prob. 9PCh. 12 - Given a table with production and attraction data,...
Ch. 12 - Given a table with production and attraction data,...Ch. 12 - Prob. 12PCh. 12 - Prob. 13PCh. 12 - Prob. 14PCh. 12 - Prob. 15PCh. 12 - Prob. 16PCh. 12 - Prob. 17PCh. 12 - Prob. 18PCh. 12 - Prob. 19PCh. 12 - Prob. 20PCh. 12 - Prob. 21PCh. 12 - Prob. 22PCh. 12 - Prob. 23PCh. 12 - Prob. 24PCh. 12 - Prob. 25PCh. 12 - Prob. 26PCh. 12 - Prob. 27PCh. 12 - Prob. 28P
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- Thank youuu please provide a detailed solution.arrow_forwardThe following cross-classification data have been developed for a European city transportation study area. House Hold (HH) Autos/HH (%) Trip Rate/Auto (%) Income Trips (%) ($) High Med Low O1+2 0 1 +2 HBW HBO NHB 10,000 0 30 70 48 48 4 2.0 6.00 28.5 38 34 28 50 | 4 72| 24 2.5 7.5 30.0 38 2 53 45 20,000 30,000 40,000 50,000 50 50 00 19 81 7.5 12.0 39.0 20 50 34 28 10 70 20 4.0 9.0 33.0 35 34 31 20 75 5 1 32 57 5.5 10.5 36.0 27 35 38 37 60,000 70 30 43 40 0010 90 8.0 13.0 41.0 16 44 Develop the family of cross-classification curves and determine the number of trips produced (by purpose) for traffic zone containing 1000 houses with an average household income of $30,000. (Use high = 55,000; medium 25,000; low = 15,000.)arrow_forwardThe Jeffersonville Transportation Study Area has been divided into four large districts (traffic zones). The following data have been collected for those districts. Provide a trip distribution calculation using the gravity model for two Assume Kij = 1.arrow_forward
- Given the following transportation network and the production/attraction data in each zone. 3 min 3 3 min 4 min 3 min 4 min 2 min 4 min 2 7 min Production/Attraction Table Zone 1 2 3 4 5 Production 600 1000 500 Attraction 300 200 350 400 The number of trips that originates from Zone 3 and ends in Zone 1 is 13 88 29 None of the abovearrow_forwardto no congestion on the road further downstream of the railway grade crossing. QUESTION 5: Consider trip distribution within 5 zones in an area. The total trip production from zone 1 is 1000. The travel times from zone 1 to zones 2, 3, 4 and 5 are 5, 10, 20, and 30 minutes, respectively. The trip attraction to zones 2, 3, 4 and 5 are 50, 200, 75, and 450, respectively. Assume that the number of trips produced from zone 1 to zones 2, 3, 4 and 5 is inversely proportional to the inter-zonal travel time. (a) Estimate the number of trips from zone 1 to zones 2, 3, 4 and 5 using the gravity model. (b) Assume that the future trip production from zone I will increase to 1,250 and the future trip attraction to zones 2, 3, 4 and 5 will increase to 100, 225, 100, and 600, respectively. Predict the number of trips from zone 1 to zones 2, 3, 4 and 5. The inter-zonal travel times remain the same. (c) Compare the number of trips from zone 1 to each destination zone between (a) and (b). Identify the…arrow_forwardA simple road network shown below has two way links. The travel time in minutes for zero volumes is also shown. Using Dijkstras algorithm, determine the following: 1. Minimum path and minimum travel time from zone B to C. Show all necessary diagrams 2. Minimum path and minimum travel time from zone A to D. Show all necessary diagramsarrow_forward
- Determine the trip distribution matrix using "Gravity Model" of transport system with given the data: Trip Production of Zones 1, 2 and 3, correspondingly are 500, 600, and 800 tpd Trip Attraction of Zones 1, 2 and 3, correspondingly are 600, 700 and 600 tpdarrow_forwardhree routes connect an origin and a destination with performance functions: ?1=8+0.5?1; ?2=1+2?2; and ?3=3+0.75?3; with the x’s being the traffic volume expressed in thousands of vehicles per hour and t’s being the travel time expressed in minutes. If the peak hour traffic demand is 3400 vehicles, determine user equilibrium traffic flows. [Hint: Note that one of the paths will not be used under the equilibrium conditionarrow_forwardAnalysis and Planning for Transportation Policy: Summarise. Please elaborate on its significance.arrow_forward
- Give the correct answersarrow_forwardThe first step is to gather data on the highway road network in Dallas County, Texas, over the last 10 years. This would include: - Length of highways (in miles) for each year.- Traffic volume data for each year.- Data on highway expansion projects (e.g., new lanes, new highways).- Population and vehicle registration data in Dallas County to assess demand.- Funding and budget data for highway projects. Sources for this data could include the Texas Department of Transportation (TxDOT), local government records, and federal transportation datasets.arrow_forwardHarrow_forward
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